package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.Attrs;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.mysql.cj.util.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService descService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService saleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        //2、保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        descService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        //4、保存spu的规格参数;pms product attr value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());

            AttrEntity attrEntity = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(attrEntity.getAttrName());
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            productAttrValueEntity.setSpuId(spuInfoEntity.getId());

            return productAttrValueEntity;
        }).collect(Collectors.toList());

        attrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息; gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if(r.getCode() != 0){
            log.debug("couponFeignService.saveSpuBounds 远程调用失败");
        }

        //5、保存当前spu对应的所有sku信息;
        List<Skus> skus = vo.getSkus();
        if(skus!=null && skus.size()>0){
            skus.stream().map(item->{
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //5.1)、sku的基本信息; pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    return !StringUtils.isNullOrEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2)、sku的图片信息;pms_sku images
                skuImagesService.saveBatch(imagesEntities);

                //5.3)、sku的销售属性信息: pms sku sale attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(skuAttr -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(skuAttr, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());

                saleAttrValueService.saveBatch(skuSaleAttrValueEntities);


                //5.4) 、sku的优惠、满减等信息; gulimall sms-sms sku ladder sms sku full reduction\sms
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);

                if(skuReductionTo.getFullCount() > 0 && skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R reduction = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(reduction.getCode() != 0){
                        log.error("couponFeignService.saveSkuReduction 远程服务调用失败");
                    }
                }
                return null;
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if(!StringUtils.isNullOrEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }
        String status = (String) params.get("status");
        if(!StringUtils.isNullOrEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isNullOrEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catalogId = (String) params.get("catelogId");
        if(!StringUtils.isNullOrEmpty(catalogId) && !"0".equalsIgnoreCase(catalogId)){
            wrapper.eq("catalog_id",catalogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        //组装需要的数据
        //1、查出当前spuid对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);

        List<Long> skuIdList = skus.stream().map(item -> {
            return item.getSkuId();
        }).collect(Collectors.toList());

        //TODO 查询出当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<Attrs> attrList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            Attrs attrs = new Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        //TODO 发送远程调用，库存系统查询是否有库存
        Map<Long,Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            List<SkuHasStockVo> data = (List<SkuHasStockVo>)r.getData(typeReference);
            stockMap = data.stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item->item.getHasStock()));
        }catch (Exception e){
            log.error("wareFeignService.getSkuHasStock(skuIdList); 远程调用失败,原因：{}",e);
        }

        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> uoProducts = skus.stream().map(sku->{
            //组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,skuEsModel);

            //skuPrice，skuImg。hasStock，hotScore
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());

            if(finalStockMap == null){
                skuEsModel.setHasStock(true);
            }else {
                skuEsModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            //TODO 热度评分
            skuEsModel.setHotScore(0L);


            //TODO 查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(skuEsModel.brandId);
            skuEsModel.setBrandName(brand.getName());
            skuEsModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(skuEsModel.getCatalogId());
            skuEsModel.setCatalogName(category.getName());

            /**
             *     public String brandName;//无
             *
             *     public String brandImg;//无
             *
             *     public String catalogName;//无
             *
             *     public List<Attrs> attrs;
             */
            skuEsModel.setAttrs(attrList);

            return skuEsModel;
        }).collect(Collectors.toList());

        //TODO 将数据发送到es，进行保存：gulimall-search
        R r = searchFeignService.productStatusUp(uoProducts);
        if(r.getCode() == 0){
            //TODO 修改spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //TODO 重复调用？接口幂等性：重试机制？xxx
        }

    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }

}